Create a new original English end-of-season sale poster with energetic comic signboard styling.
Style: bold outlined lettering, layered irregular badges, crisp vintage print texture.
Layout: tall portrait composition with a large sale title, one season tag, and one discount tag.
Main text: "FINAL SALE", "END OF SEASON", "SAVE 45%".
Language: English only; keep every phrase correctly spelled.
Design changes: use teal, sunflower yellow, red-orange, cream, and black with lightning bolts and a shopping bag icon.
Background: dynamic geometric poster background with halftone dots and generous outer margins.
Remove: watermark, brand logo, QR code, website, author mark, fine print, and any note starting with "*".
Avoid: exact copying, original colors, random tiny text, misspelled text, and copyrighted brand elements.
